Patents by Inventor Tai-Kew Choi

Tai-Kew Choi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8132305
    Abstract: A package cutting apparatus includes at least two spindles installed at a sawing robot and cutting a frame including a plurality of packages into packages using cutting bits; a frame loading jig loading the frame so that the frame is cut; and a frame-and-unit picker installed at an orthogonal robot to load and unload the frame on and from the frame loading jig, wherein a state of the cutting bit installed at the spindle is checked.
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: March 13, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tai-Kew Choi, Yong-Kyun Sun, Hee-Sang Yang, Yo-Se Eum, Ho-Soo Jang
  • Publication number: 20080056832
    Abstract: A package cutting apparatus includes at least two spindles installed at a sawing robot and cutting a frame including a plurality of packages into packages using cutting bits; a frame loading jig loading the frame so that the frame is cut; and a frame-and-unit picker installed at an orthogonal robot to load and unload the frame on and from the frame loading jig, wherein a state of the cutting bit installed at the spindle is checked.
    Type: Application
    Filed: August 30, 2007
    Publication date: March 6, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tai-Kew CHOI, Yong-Kyun SUN, Hee-Sang YANG, Yo-Se EUM, Ho-Soo JANG
  • Publication number: 20060056955
    Abstract: A sawing and sorting system combines a sawing apparatus and a sorting apparatus. The sawing and sorting system comprises a loader. The loader comprises a magazine receiving a plurality of strips. A mounting unit mounts the strip thereon. A plurality of transfer and sawing robots each comprises a picker unit. The picker unit comprises a rotatable chuck table. The transfer and sawing robot transfers the picker unit horizontally and vertically. The rotatable chuck table holds the strip. The picker unit rotates the rotatable chuck table. A plurality of sawing spindle units each comprises a rotary blade. The sawing spindle unit moves the blade horizontally to divide the strip into unit packages. A cleaning unit cleans the unit package. A test means inspects the unit package according to a test criteria. A sorting table mounts the unit package for sorting. An unloader provides trays. A sorting transfer robot sorts the unit packages into the trays.
    Type: Application
    Filed: September 6, 2005
    Publication date: March 16, 2006
    Inventors: Yong-Kuk Kim, Hyun-Ho Kim, Ho-Seong Kim, Yong-Kyun Sun, Tai-Kew Choi
  • Patent number: 6085804
    Abstract: A lead forming apparatus and a method for removing tin dust from the surface of the outer leads of semiconductor package are disclosed. The apparatus, in which a brushing operation removes tin dust from the outer leads, includes a supplier part; a lead forming part; a collection part; an intermediate post; a package transportation part; a brush block; and a brush transportation part. The method includes steps of providing a leadframe, forming the package leads, removing tin dust from the leads, and collecting the packages in a container.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: July 11, 2000
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jun Hyuk Choi, Tai Kew Choi, Gyu Han Bae, Byong Do Na
  • Patent number: 5957654
    Abstract: A lead frame unloading apparatus includes a pair of opposing plate members, one of which has a long horizontal slit. The opposing plate members define a central space where one or more sliding blocks are located, each of the sliding blocks having a vertical through hole at its center. A picker penetrates through the vertical hole within each respective sliding block, each picker is immobilized when it contacts a lead frame for pickup thereby allowing the sliding block to move vertically up and down on the immobilized pickers, each of the pickers having a vacuum suction device at one end thereof, and a vacuum screw at the other end thereof. The vacuum screw has a hollow projection connected to a vacuum supplier. A spring is disposed beneath respective of the one or more sliding blocks, with the spring being fitted to an outside of the vacuum suction device. Spring stoppers support the springs and fastening devices fasten the one or more sliding blocks to the opposing plate members.
    Type: Grant
    Filed: December 13, 1996
    Date of Patent: September 28, 1999
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jun Hyuk Choi, Tai Kew Choi, Jung Kun Lee, Jae Won Lee